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| author | Andreas Schwab <schwab@suse.de> | 2004-04-08 23:30:26 +0000 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2004-04-08 23:30:26 +0000 |
| commit | 2114e3242b584a8592abdf394b9890bf4c2e3e3c (patch) | |
| tree | adf8015ad6331503184af5244100db4b1c2350f6 | |
| parent | adcd516432811caa50970d80eb3e66d83a6dc7c6 (diff) | |
| download | glibc-2114e3242b584a8592abdf394b9890bf4c2e3e3c.tar.gz glibc-2114e3242b584a8592abdf394b9890bf4c2e3e3c.tar.xz glibc-2114e3242b584a8592abdf394b9890bf4c2e3e3c.zip | |
(INTERNAL_SYSCALL): Add LOAD_REGS_##nr. (LOAD_ARGS_0, LOAD_ARGS_1, LOAD_ARGS_2, LOAD_ARGS_3, LOAD_ARGS_4) (LOAD_ARGS_5, LOAD_ARGS_6): Load argument values into temporary variables. (LOAD_REGS_0, LOAD_REGS_1, LOAD_REGS_2, LOAD_REGS_3, LOAD_REGS_4) (LOAD_REGS_5, LOAD_REGS_6): New macros to actually load the syscall argument registers.
| -rw-r--r-- | sysdeps/unix/sysv/linux/m68k/sysdep.h | 49 |
1 files changed, 36 insertions, 13 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep.h b/sysdeps/unix/sysv/linux/m68k/sysdep.h index 3c6266bae4..234ce32f4f 100644 --- a/sysdeps/unix/sysv/linux/m68k/sysdep.h +++ b/sysdeps/unix/sysv/linux/m68k/sysdep.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 2000, 2003 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997, 1998, 2000, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Written by Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>, December 1995. @@ -225,7 +225,11 @@ SYSCALL_ERROR_LABEL: \ #define INTERNAL_SYSCALL(name, err, nr, args...) \ ({ unsigned int _sys_result; \ { \ + /* Load argument values in temporary variables + to perform side effects like function calls + before the call used registers are set. */ \ LOAD_ARGS_##nr (args) \ + LOAD_REGS_##nr \ register int _d0 asm ("%d0") = __NR_##name; \ asm volatile ("trap #0" \ : "=d" (_d0) \ @@ -243,30 +247,49 @@ SYSCALL_ERROR_LABEL: \ #define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) #define LOAD_ARGS_0() +#define LOAD_REGS_0 #define ASM_ARGS_0 #define LOAD_ARGS_1(a1) \ - register int _d1 asm ("d1") = (int) (a1); \ - LOAD_ARGS_0 () + LOAD_ARGS_0 () \ + int __arg1 = (int) (a1); +#define LOAD_REGS_1 \ + register int _d1 asm ("d1") = __arg1; \ + LOAD_REGS_0 #define ASM_ARGS_1 ASM_ARGS_0, "d" (_d1) #define LOAD_ARGS_2(a1, a2) \ - register int _d2 asm ("d2") = (int) (a2); \ - LOAD_ARGS_1 (a1) + LOAD_ARGS_1 (a1) \ + int __arg2 = (int) (a2); +#define LOAD_REGS_2 \ + register int _d2 asm ("d2") = __arg2; \ + LOAD_REGS_1 #define ASM_ARGS_2 ASM_ARGS_1, "d" (_d2) #define LOAD_ARGS_3(a1, a2, a3) \ - register int _d3 asm ("d3") = (int) (a3); \ - LOAD_ARGS_2 (a1, a2) + LOAD_ARGS_2 (a1, a2) \ + int __arg3 = (int) (a3); +#define LOAD_REGS_3 \ + register int _d3 asm ("d3") = __arg3; \ + LOAD_REGS_2 #define ASM_ARGS_3 ASM_ARGS_2, "d" (_d3) #define LOAD_ARGS_4(a1, a2, a3, a4) \ - register int _d4 asm ("d4") = (int) (a4); \ - LOAD_ARGS_3 (a1, a2, a3) + LOAD_ARGS_3 (a1, a2, a3) \ + int __arg4 = (int) (a4); +#define LOAD_REGS_4 \ + register int _d4 asm ("d4") = __arg4; \ + LOAD_REGS_3 #define ASM_ARGS_4 ASM_ARGS_3, "d" (_d4) #define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ - register int _d5 asm ("d5") = (int) (a5); \ - LOAD_ARGS_4 (a1, a2, a3, a4) + LOAD_ARGS_4 (a1, a2, a3, a4) \ + int __arg5 = (int) (a5); +#define LOAD_REGS_5 \ + register int _d5 asm ("d5") = __arg5; \ + LOAD_REGS_4 #define ASM_ARGS_5 ASM_ARGS_4, "d" (_d5) #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ - register int _a0 asm ("a0") = (int) (a6); \ - LOAD_ARGS_5 (a1, a2, a3, a4, a5) + LOAD_ARGS_5 (a1, a2, a3, a4, a5) \ + int __arg6 = (int) (a6); +#define LOAD_REGS_6 \ + register int _a0 asm ("a0") = __arg6; \ + LOAD_REGS_5 #define ASM_ARGS_6 ASM_ARGS_5, "a" (_a0) #endif /* not __ASSEMBLER__ */ |